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Instrument: WIFS : Wide Field Scanner
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Associated Platforms

Spectral/Frequency Information
Wavelength Keyword: Visible
Number Channels: 2
Spectral/Frequency Coverage/Range: 0.62 ?m - 0.68 ?m

Wavelength Keyword: Near Infrared
Number Channels: 2
Spectral/Frequency Coverage/Range: 0.77 ?m - 0.86 ?m

Related Data Sets
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The Wide Field Sensor (WiFS) is on-board the Indian Remote Sensing Satellite 1C (IRS-1C) launched in 1996. It collects images during mid-morning (about 10:30 AM) with a spatial resolution of about 200 meters in both a red and near-infrared spectral band. The temporal resolution/revisit time frame is five days, which is an improvement over the two weeks of the Landsat systems, but still not as frequent as that of the GOES (every 15-30 minutes) or SeaWiFS (once per day). A major advantage of this data set is that it fills in the spatial resolution gap between the Landsat TM and MSS (30 and 75 meters, respectively) and the GOES and SeaWiFS (1 km) data sets. This, combined with the fact that our eolian erosion vulnerability image-mapping algorithm uses the red and near-infrared bands (the two bands collected by WiFS), allows excellent regional image maps to be made using these data. The five day temporal resolution makes them better than the Landsat MSS and TM data for possible i maging of active dust storms, but still not acceptable for operational monitoring and detection of active dust storms.

Online Resources

Instrument Logistics
Instrument Owner: India